Each exoccipital articulates with the caudolateral edge of the supraoccipital and laterally with the caudomedial edge of the opisthotic, as well as ventrally and medially with the basioccipital (Figure 1D).

However, most gonorynchiforms examined by us exhibit a well-developed, paired ossification that is usually named 'cephalic rib' but that is strikingly similar to the ossified Baudelot's ligament of teleosts such as catfishes, connecting the cleithrum and/or supracleithrum to the posteromesial surface of the neurocranium (usually exoccipital and/or basioccipital) (e.

In the cases of atkinsi, auriculatoides, coqui, dimidiatus, jugans, pinarensis, ricordii, teretistes, and ventrilineatus, he could see a suture between the frontoparietal and exoccipital in each of these taxa and concluded that there was no frontoparietal-prootic fusion.

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